A. Each year at least 25 percent (25%) of the Testing-Designated Positions will tested for alcohol misuse and 50 percent (50%) for drug use. Selection of Employees for these tests will be through a scientifically valid random-position number selection method. These unannounced tests will be conducted throughout each 12 month period. Each Testing-Designated Positions Employee will have an equal chance of selection each time a test is administered.

B. The Testing-Designated Positions subject to random drug testing are: Positions identified by LBJ which entail duties where failure of an Employee adequately to discharge his or her position could significantly harm the environment, fellow Employees, or public health or safety.